36 



ENGINEERING ON THE FARM 



Elements of a knot. The open bight, shown in Figure 

 ii, the bight, Figure 12, and the round turn, shown in 

 Figure 13, are elements that are used in making knots, 

 hitches, and splices. 



Fig. 11 





Fig. 12 



Fig. 13 



PREVENTING THE ENDS OF ROPE FROM UNTWISTING 



Whipping. Whipping should be used wherever the end 

 of the rope must pass through small openings, as in reeving 

 a set of blocks. In whipping, carefully observe these 

 directions : 



1. Put a string under a strand of the rope at a distance 

 from the end which is equal to a turn of one strand, as shown 

 in Figure 14 and allow several inches of end, as shown at A 

 in Figure 14. 



2. Give the end B one turn around the rope as shown by 

 the arrow in Figure 14, and then fold the end A over as shown 

 in Figure 15. 



3. Continue whipping or wrapping the end B tightly 

 around the rope and end A until you have reached a point 



